Restricted requirement types
Restricted values allow you to narrow down the accepted input to a limited number of
values and their synonyms.
For example, paper size can be defined as a restricted requirement type because there is a limited set of available sizes.
When you define the requirement type, select the option. Specify the allowed values and synonyms for each value. For example, specify Letter as an allowed value for letter-sized paper. Specify synonyms for letter-sized paper such as 8.5x11 or ANSI A. Specify your synonyms separated by commas.